Gas burner



Jan. 6, 1959 E. C. JACKSON GAS'BURNER Filed Deep 23. 1953 EARL a memo/vINVENTOR ATTORNEY 2 Claims. (Cl. 158-99) The present invention relatesto a fluid fuel burner and more particularly to a gas burner for usewith incinerators.

Heretofore, gas burners have been used for supplying heat and in somecasesgas burners have been used with incinerators for heating thematerial to the point where such material becomes disintegrated and willburn or oxidize. These prior structures have not been entirelysatisfactory and have been diflicult to service and frequently .theentire burner and incinerator have been put out of service for anextended period of time while awaiting repair parts or while waiting aservice man. As a result garbage and trash accumulated with theresultant health and fire hazard;

An object of the present invention is to overcome the above mentioneddifiiculties of .the prior art incinerators and gas burners, and toprovide a gas burner in which the burner and control elements may beremoved as a unit and a replacement unit may be immediately, substitutedso that the defective unit may be repaired with practically nointerruption in service.

Another object of the invention is to provide a gas burner which may beapplied directly to an incinerator so the gas burner serves tocompletely close the opening in the furnace or incinerator whereby noother closure or sealing means is necessary.

A further object is to provide a one piece burner unit which may beinexpensively constructed and remain operative for a great length oftime with a minimum of maintenance or repair.

The burner unit of the present invention includes a tubular burnernozzle having a Venturi intermediate its ends and a flaring portion atits inner end provided with a restricted opening from which the mixtureof gas and air is projected and at which restricted opening, thecombustion occurs. A laterally extending flange intermediate the ends ofthe nozzle projects a' sufficient distance to close the opening throughwhich the inner end of the nozzle projects into a furnace or incineratorwith the flange serving to substantially ,close and seal such opening.On the opposite or exposed end of the nozzle a more or less conventionalfunnel shaped air inlet is provided through which the air supply iscontrolled by an adjustable plate having apertures designed forregistrylwith apertures in the outer or exposed end of the burner body.

A pilot light forming structure is provided for directing an ignitionflame toward the restricted opening of the nozzle. The gas supply andcontrol conduits to the pilot light pass through the same opening in thewall of the furnace whereby the entire burner and pilot light formingstructure may be removed asa unit. A time control for limiting the flowof gas to the burner is provided 2,57,27'1 Patented Jan. 6, 1 959 2 pairin a minimum of time and with a minimum of effort.

Further objects and advantages'of the invention will be apparent fromthe following description taken in conjunction with the drawing,wherein: V

Fig. 1 is a perspective view of the burner as applied to a vertical wallof a furnace with only a portion of the furnace shown and parts brokenaway for clarity;

Fig. 2, a sectional view taken'on line 2-2 of Fig. l;

Fig. 3, a sectional view taken substantially on line 33 of Fig. 2;

Fig. 4, a top plan view of the burner showing the location of the pilotlight forming structure; and

Fig. 5, a fragmentary inner end view of the burner.

Referring'more particularly to the drawing, a portion of a wall 10 of afurnace or incinerator isv provided with an opening 11 through which aburner nozzle 12 extends into the furnace. Such nozzle includes arestricted Venturi portion 13 provided with a generally rectangularflange 14 extending laterally of the axis of the nozzle 12 .rate ofcombustion.

and suitable fastening screws 15 passing through openings in the flange14 being threaded into the furnace maintain the nozzle in fixed positionso that flange 14 substantially seals the burner receiver opening 11 ofthe furnace wall 10.

A portion 16 of nozzle 12 flares from the Venturi 13 toward the innerend where a conveyor wall is provided with a restricted gas and air port17 from which the flame projects. The size of the port 17 can beincreased to provide for a greater flow ofgas and a resulting higherFrom the Venturi 13 a portion of the nozzle flares outwardly providing afunnel shaped portion 18 provided with an outer end wall 19 providedwith air supply sector shaped openings 20. Controlled by a plate 21having sector shaped'openings 22 for registry with openings 20 foradjusting the amount of air going into the burner.

Combustible gas is supplied to the burner through an elbow'23 having athreaded end 24 threaded to a tapped axial opening in the outer end wall19 of the burner nozzle. A lock nut 25 provided on the threaded portion24 secures the air control plate 21 in position and also looks theburner nozzle in fixed relation to the elbow 23.

The threaded end 24 is provided with an orifice 46 (Fig;

5) for producing a jet of gas in the Venturi.

Referring to Figs. 1 and 4, it will be noted that a laterally projectinglug 26 is cast on the side of the nozzle 12 and a bracket 27 fixed bymeans of screws 28 threaded into the lug 26 supports pilot light formingmeans 29 for providing an ignition flame forthe burner projecting theflame laterally therefrom toward the restricted opening 17 at the innerend of the nozzle. Gas is supplied to the pilot light by means ofconduit 30 connected by means of a union fitting to a pipe 31 upon whicha control valve having a fire screen 32 rotatably secured to a knurledadjusted nut 33 are mounted. The pipe 31 has one or more openings withinthe fire screen 32 in communication with the pilot light formingmeans 29supplying the desired amount of air for such pilot light. The amount ofgas- 33 are threaded on to the pipe 31 so that a binding action and ashut off control under the influence of the heat'of the pilot lightflame is provided for shutting ofi the entire supply of gas in the eventthe pilot flame becomes extinguished, and a manual shut ofl valve in thesupply line joined to the burner by a union connection permits theentire assembly to be removed for replacement or reresults when relativerotation between the fire screen and the knurled nut occurs. The firescreen and nut cover the air supply opening and the adjustment of nut 33controls the air flow. A control tube 35 extends from the pilot light toa shut ofl valve hereinafter described.

Gas is supplied from a conventional supply pipe 36 to a manuallyoperated shut ofi valve 37 of well known type and through a unionconnection 38 including the necessary nipples to a pilot lightcontrolled shut off valve device 39. The pilot light control device 39is of conventional consrtuction being provided with a reset button 40and controlled by means of the control line 35' which extends to thepilot light and is actuated by the presence of heat due to the pilotlight being ignited so that in the event the pilot light becomesextinguished, the control device 39 will automatically shut ofl? thesupply of gas.

The gas is conducted from the pilot light controlled valve device 39through suitable conduits including an trol valve 42, the gas isconducted by means of a nipple;

44 and a union 45 to the elbow; 23 and into the orifice 46 in the end ofthreaded portion 24- Itwillbe evident that the flange- 14 is providedwith a recess 47 for accommodating the pilot light gas supply pipe 30and pilot light control duct35 and the opening 11 in the wall of thefurnace is of suflicient size to permit complete withdrawal of the innerend of the nozzle including the pilot light forming means 29 and thesupporting bracket andllug therefor whereby the entire burner with theadditional structure thereon may be removed. j

The installation of the burner. is a simple matter of providing gasfitting connections and in the event that some portions of the controlbecome defective and it is urgent that the incinerator or furnace bekept in operation, the shut off valve 37 may be closed, the fourattaching screws may be removed, and the'union connection 38 separated,whereby the burner'may-be re-- moved with the entire control mechanism.Any necessary adjustments can be made very simply or the entire burnerand control unit may be replaced With new or rebuilt unit therebykeeping the furnace or incinerator in practically continuous operation.V

The burner nozzle 12 may be removed separately by disconnecting union45, disconnecting a union type connection 47 to the pilot light and aunion type connection 48 between the control duct 35 and the pilot lightcon trolled device 39, thereby the burner may be removed withoutdisturbing the other control elements intheevent that the burner becomesclogged or otherwise requires attention.

The burner shown operates satisfactorily for an output of 15,000 B. t.u. with the port 17 being cast therein without subsequent machining. Forhigher outputs the port 17 may be machined to a larger size and thecontrols: for correspondingly increased gas consumption 'may be providedso that the burner may operate at any output up to 125,000 13. t. u.

It will be obvious to those skilledin the art that various changes maybe made in the invention without departing from the spirit or scopethereof and therefore the invention is not limited by that which isillustrated in the drawing and described in the specification, but onlyas indicated in the accompanying claims.

What is claimed is: i I

1. A burner unit for application to a furnace comprising a tubularnozzle including an inner end having a restricted discharge opening, anintermediate portion of the nozzle having a restricted cross-sectionalshape and the outer endportion of the nozzle having a rapidly divergingopen interior, with the outer end having radial web portions extendingthereacross, a supply fitting' threaded into the central portion of theweb portion of the outer end of the burner, a plate adjustable on thesupply fitting for controlling the supply of air to the burner, theinner end of the fitting being provided with a restricted orifice fordirecting combustion gas toward the inner end of the burner and thereby.drawing air through the outer end of such burner, a flange mounted onthe burner and projecting'laterally beyond the lateral dimensions of theinner end thereof and provided with a cut out portion for receivingpilot'light gas supply and control elements, a laterally extending lugon the nozzle projecting radially in the same direction from the tubularnozzle'as said out out, upon which a bracket may be mounted for a pilotlight for projecting a flame toward the inner end of said nozzle andupon which a flame-responsive structure controlled by said pilot lightmay be mounted.

2. A burner unit for application to a furnace comprising'a tubularnozzle including an inner end having a' H restricted discharge opening,an intermediate portionof the nozzle having a restricted cross-sectionalshape and the outer end portion of the nozzlev having a rapidlydiverging open interior, means to secure a supply fitting to j the outerend of said nozzle, means to control the supply of air to said burner,the inner end of the fitting being provided with a restricted orificefor directing combustion gas toward the inner end of the burner andthereby drawing air through the outer end of such burner, a flangemounted on the burner and projecting laterally beyond the lateraldimensions of the inner end thereof and provided with a cut out portionfor receiving pilotli'ght gas supply and control elements, a laterallyextending lug on the nozzle projecting radially in the samedirection-from.

the tubular nozzle as said cut out, upon which a bracket may be mountedfor a pilot light for projecting a flame 7 toward the inner end of saidnozzle. and upon which a flame responsive structure controlled by saidpilot light may be mounted. I 1

References Cited in the file of this patent UNITED STATES PATENTS I977,214 Muirheat 'Nov. 29, 1910 1,183,478 Mathias et a1. May 16,19161,763,159 Klein June 10, 1930 1,836,567 Wolpert et a1 Dec. 15, 19311,857,862 a Page May 10, 1932 2,164,417 'McKee July 4, 1939 2,184,947Schell'; Dec. 26, 1939 2,295,784 Handley Sept.-15', 1942 2,336,816Thompson Dec. 14, 1943 2,490,127 Handley Dec. 6, 1949 [2,498,162 HellerFeb. 21, 1950 2,562,536 Mayer July 31, 1951 2,720,918 Buysse Oct. 18,1955 2,731,009 Pocrass et al. Jan. 17, 1956 FOREIGN PATENTS a 955,208France 'June'27,

